Helm HM1734-WM-2HR Installation Instructions Manual

February, 2019

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Description

1

6

RTB Removal Handle

Mounting Base

1

2

Mechanical Keying (orange)

7

Removable Terminal Block (RTB)

1

3

Module Wiring Diagram

8

DIN Rail Locking Screw (orange)

4

Module Locking Mechanism

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Slide-in Writable Label

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Insertable I/O Module

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Interlocking Side Pieces

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Wiring Base Assembly consists of item 1) mounting base, 1734-MB and item 7) removable

terminal block, 1734-RT or -RTS.

POINT I/O is a trademark of Rockwell Automation1

DeviceNet is a trademark of ODVA, Inc.

Helm Instrument Company, Inc.

361 West Dussel Drive

Maumee, Ohio 43537 USA

419/ 893-4356

Fax: 419/ 893-1371

www.helminstrument.com

Installation Instructions

HM1734-WM-2HR

POINT I/O Strain Gage Input Module

2/11/2019

2 HM1734-WM Strain Gage Input Module

This Series C product can be used with DeviceNet and PROFIBUS

adapters. It can be used with Ethernet/IP and Ethernet adapters using

RSLogix 5000, version 11 (or higher) software.

Important User Information

Because of the variety of uses for the products described in this publication,

those responsible for the application and use of these products must satisfy

themselves that all necessary steps have been taken to assure that each

application and use meet all performance and safety requirements, including

any applicable laws, regulations, codes and standards. In no event will

Allen-Bradley be responsible or liable for indirect or consequential damage

resulting from the use or application of these products.

Any illustrations, charts, sample programs, and layout examples shown in this

publication are intended solely for purposes of example. Since there are many

variables and requirements associated with any particular installation,

Allen-Bradley does not assume responsibility or liability (to include intellectual

property liability) for actual use based upon the examples shown in this

publication.

Allen-Bradley publication SGI-1.1, Safety Guidelines for the Application,

Installation and Maintenance of Solid-State Control (available from your local

Allen-Bradley office), describes some important differences between

solid-state equipment and electromechanical devices that should be taken into

consideration when applying products such as those described in this

publication.

Reproduction of the contents of this copyrighted publication, in whole or

part, without written permission of Rockwell Automation, is prohibited.

Throughout this publication, notes may be used to make you aware of safety

considerations. The following annotations and their accompanying statements

help you to identify a potential hazard, avoid a potential hazard, and recognize

the consequences of a potential hazard.

Identifies information about practices or

WARNING

circumstances that can cause an explosion in a

hazardous environment, which may lead to

!

personal injury or death, property damage, or

economic loss.

3 HM1734-WM Strain Gage Input Module

Identifies information about practices or

ATTENTION

circumstances that can lead to personal injury or

death, property damage, or economic loss.

!

Identifies information that is critical for

IMPORTANT

successful application and understanding of the

product.

-

4 HM1734-WM Strain Gage Input Module

Environment and Enclosure

ATTENTION

!

This equipment is intended for use in a Pollution Degree 2

industrial environment, in overvoltage Category II applications

(as defined in IEC publication 60664-1), at altitudes up to 2000

meters without derating.

This equipment is considered Group 1, Class A industrial

equipment according to IEC/CISPR Publication 11. Without

appropriate precautions, there may be potential difficulties

ensuring electromagnetic compatibility in other environments

due to conducted as well as radiated disturbance.

This equipment is supplied as "open type" equipment. It must

be mounted within an enclosure that is suitably designed for

those specific environmental conditions that will be present and

appropriately designed to prevent personal injury resulting from

accessibility to live parts. The interior of the enclosure must be

accessible only by the use of a tool. Subsequent sections of this

publication may contain additional information regarding

specific enclosure type ratings that are required to comply with

certain product safety certifications.

See NEMA Standards publication 250 and IEC publication

60529, as applicable, for explanations of the degrees of

protection provided by different types of enclosure. Also, see the

appropriate sections in this publication, as well as the

Allen-Bradley publication 1770-4.1 ("Industrial Automation

Wiring and Grounding Guidelines"), for additional installation

requirements pertaining to this equipment.

POINT I/O is grounded through the DIN rail to

ATTENTION

chassis ground. Use zinc plated, yellow chromated

!

steel DIN rail to assure proper grounding. Using

other DIN rail materials (e.g. aluminum, plastic,

etc.) which can corrode, oxidize or are poor

conductors can result in improper or intermittent

platform grounding.

5 HM1734-WM Strain Gage Input Module

EXPLOSION HAZARD

WARNING

 Do not disconnect equipment unless power has been

!

removed or the area is known to be nonhazardous.

 Do not disconnect connections to this equipment unless

power has been removed or the area is known to be

nonhazardous. Secure any external connections that mate

to this equipment by using screws, sliding latches, threaded

connectors, or other means provided with this product.

 Substitution of components may impair suitability for Class

I, Division 2.

 If this product contains batteries, they must only be

changed in an area known to be nonhazardous.

Preventing Electrostatic Discharge

ATTENTION

This equipment is sensitive to electrostatic

!

discharge, which can cause internal damage and

affect normal operation. Follow these guidelines

when you handle this equipment:

 Touch a grounded object to discharge potential

static.

 Wear an approved grounding wriststrap.

 Do not touch connectors or pins on component

boards.

 Do not touch circuit components inside the

equipment.

 If available, use a static-safe workstation.

 When not in use, store the equipment in

appropriate static-safe packaging.

6 HM1734-WM Strain Gage Input Module

Installing the Mounting Base

To install the mounting base on the DIN rail, proceed as follows.

1. Position the mounting base vertically above the installed units

(adapter, power supply or existing module.

2. Slide the mounting base down allowing the interlocking side pieces to

engage the adjacent module or adapter.

3. Press firmly to seat the mounting base on the DIN rail. The mounting

base will snap into place.

4. To remove the mounting base from the DIN rail, remove the module,

and use a small bladed screwdriver to rotate the base locking screw to

a vertical position. This releases the locking mechanism. Then lift

straight up to remove.

Installing the I/O Module

The module can be installed before, or after base installation. Make sure that

the mounting base is correctly keyed before installing the module into the

mounting base. In addition, make sure the mounting base locking screw is

positioned horizontal referenced to the base.

When you insert or remove the module while

WARNING

backplane power is on, an electrical arc can

!

occur. This could cause an explosion in

hazardous location installations. Be sure that

power is removed or the area is nonhazardous

before proceeding.

1. Using a bladed screwdriver, rotate the keyswitch (2) on the

mountingbase clockwise until the number required for the type of

module being installed aligns with the notch in the base.

2. Make certain the DIN rail locking screw is in the horizontal position.

(You cannot insert the module if the locking mechanism is unlocked.)

7 HM1734-WM Strain Gage Input Module

3. Insert the module straight down into the mounting base and press to

secure. The module will lock into place.

Installing the Removable Terminal Block (RTB)

A removable terminal block is supplied with your wiring base assembly. To

remove, pull up on the RTB handle. This allows the mounting base to be

removed and replaced as necessary without removing any of the wiring. To

reinsert the removable terminal block, proceed as follows.

1. Insert the end opposite the handle into the base unit. This end has a

curved section that engages with the wiring base.

2. Rotate the terminal block into the wiring base until it locks itself in

place.

3. If an I/O module is installed, snap the RTB handle into place on the

module.

When you connect or disconnect the Removable

WARNING

Terminal Block (RTB) with field side power

applied, an electrical arc can occur. This could

!

cause an explosion in hazardous location

installations.

Be sure that power is removed or the area is

nonhazardous before proceeding.

8 HM1734-WM Strain Gage Input Module

Removing a Mounting Base

To remove a mounting base, you must remove any installed module, and the

module installed in the base to the right. Remove the removable terminal

block (if wired).

1. Unlatch the RTB handle on the I/O module.

2. Pull on the RTB handle to remove the removable terminal block.

When you connect or disconnect the Removable

WARNING

Terminal Block (RTB) with field side power

applied, an electrical arc can occur. This could

!

cause an explosion in hazardous location

installations.

Be sure that power is removed or the area is

nonhazardous before proceeding.

3. Press on the module lock on the top of the module.

4. Pull on the I/O module to remove from the base.

When you insert or remove the module while

WARNING

backplane power is on, an electrical arc can

occur. This could cause an explosion in

!

hazardous location installations. Be sure that

power is removed or the area is nonhazardous

before proceeding.

5. Repeat steps 1, 2, 3 and 4 for the module to the right.

6. Use a small bladed screwdriver to rotate the orange base locking

screw to a vertical position. This releases the locking mechanism.

7. Then lift straight up to remove.

9 HM1734-WM Strain Gage Input Module

OUTPUT TAG DESCRIPTIONS

CALMODE

Used for initial installation. All math is disabled, weigh value is not scaled, leaving raw A/D value.

Value = 2,090,000 to 2,100,000 at normal zero (at rest state).

RUNMODE

A/D values scaled with math in ladder logic

Factory cal setting 100,000 counts = 2MV/V

CLEAR TARE CH1/CH2 Bit

Clears internal tare value for “zero state”.

Useful when troubleshooting load cell wiring or other failures.

TARE CH1/CH2

Sets A/D value to zero.

READ ADTRIM BIT

(HELM Factory setting only).

SET-TO-CH1 Bit

Used for one channel operation where a faster sample speed is required.

1 = 2msec (max speed)

0 = 4msec (max speed-default)

FREQUENCY BITS

Used to set sample rate and filter options.

With no bits set: Sample = 100msec.

Set one bit only.

Note: For one channel operation, sample rate is at bit selected.

For two channel operation, sample rate is 2 times bit time selected.

10 HM1734-WM Strain Gage Input Module

OUTPUT TAG DESCRIPTIONS

VIBRATION FILTER

Filter ON/OFF Bit

0 = Normal Average

1 = Rolling Average

MSF BITS – (Motion Stabilization Filter)

Used for applications with constant or static type loads to keep display value stable.

MSF1_2 (1 count up – 2 counts down).

MSF2_4

MSF4_8

MSF5_10

Set one bit only.

ZERO-DEAD-BAND Bits

Useful for Auto-Tare functions with production runs.

Set only one bit.

ZEROBAND_025 = .025% full scale

ZEROBAND_05 = .05% full scale

ZEROBAND_075 = .075% full scale

Auto tare occurs when load cell weight is at bit level or lower.

SET AVERAGE SAMPLE Bits

See Required Controller Tags:

HM1734WM1_a[8]

11 HM1734-WM Strain Gage Input Module

REQUIRED CONTROLLER TAGS

CH1/CH2 SCALE SET

HM1734WM1_a[0]

HM1734WM1_a[3]

Full scale setting for CH1, CH2

Value is determined by capacity of load cell and by resolution required.

Example: 10KG = 10,000

SET AUTOCAL REFERENCE WEIGH VALUE CH1, CH2

HM1734WM1_a[1]

HM1734WM1_a[4]

Enter desired value to read based on known weight from calibrate procedure.

GET WEIGH VALUE CH1, CH2

HM1734WM1_a[2]

HM1734WM1_a[5]

Reports measured weigh value in RUN mode.

Reports raw A/D count value in CAL mode.

SET AUTOCAL CH1, CH2 Enable Bit

HM1734WM1_a[6]

HM1734WM1_a[7]

With ladder logic provided, an auto-cal method for calibrating is available.

Set to (1) to initiate Auto-Cal for the channel.

Ladder logic will clear the bit.

SET AVERAGE SAMPLE COUNT

HM1734WM1_a[8]

Set number of samples to take for average type filter.

Two Channel operation; Max value (50).

One Channel operation; Max value (100).

SET mV/V CH1, CH2

HM1734WM1_b[0]

HM1734WM1_b[1]

CH1/CH2 MV_V Settings

Enter 2.0MV/V for nominal load cell.

Actual value is from load cell specification.

AUTO CAL mV/V

HM1734WM1_b[2]

HM1734WM1_b[3]

Values generated by Auto_Cal routine.

12 HM1734-WM Strain Gage Input Module

Troubleshooting with the Indicators

Module Status:

Off

No power applied to device.

Green

Device operating normally.

Flashing Green

Device needs commissioning due to configuration

missing, incomplete or incorrect.

Flashing Red

Recoverable fault.

Red

Unrecoverable fault. May require device replacement.

Flashing Red/Green

Device is in self-test.

Network Status:

Off

Device is not on-line. Device has not completed

dup_MAC_id test. Device not powered. Check module

status indicator.

Green

Device on-line and has connections to the established

state.

Flashing Green

Device is on-line but has no connections in the

established state.

Flashing Red

One or more I/O connections is in timed-out state.

Red

Critical link failure – failed communications device.

Flashing Red/Green

Network access error and is in communication faulted

state. Device has received and accepted an Identity

Communication Faulted Request – long protocol

message.

A complete listing of a sample ladder logic program is included

at the back of this manual.

Examples shown here are for reference.

All values are 0 (default) on initial start-up.

This means that all alarms are disabled.

You must make the following adjustments for proper operation:

 Balance sensor input(s)

 Set Calibration numbers

Follow Steps 1 and 2 for each channel.

Step 1. Balance Sensor Input Check

1. Set to CAL mode.

2. Set Clear Tare bit momentarily.

3. Check Raw A/D value. (Range 2,090,000 to 2,100,000)

CH1 = Controller Tag HM1734WM1-a[2]

CH2 = Controller Tag HM1734WM1-a[5]

4. Set Zero Tare bit momentarily.

Step 2. Set Calibration Numbers

1. Set Scale to capacity of load cell.

2. Set mV/V to load cell specification.

Example:

100 ton load cell, 2.025 mV/V

For scale set, enter 100

For mV/V set, enter 2.025

3. Set to RUN mode.

14 HM1734-WM Strain Gage Input Module

13 HM1734-WM Strain Gage Input Module

Specifications - HM1734-WM Strain Gage Input Module

Setup Procedure

15 HM1734-WM Strain Gage Input Module

CALIBRATING WITH KNOWN LOAD (AUTO-CAL)

1) Set known weight for channel at scale parameter.

2) Set mV/V.

3) Tare-0 (with no weight on cell/scale).

4) Set module to AUTOCAL mode (BIT).

5) Apply known load (test weight) to load cells/ scale.

6) Set AUTOCAL bit on for CH1 (CH2 if applicable).

7) To ensure accuracy repeat the steps above.

8) Toggle “SAVE TO EEPROM” (BIT).

9) MAKE SURE AUTOCAL MODE BIT STAYS ON.

16 HM1734-WM Strain Gage Input Module

SETTING UP HM1734WM MODULE USING 1734-AENT/A on Ethernet/IP

Step #1

Add module to project as following:

HM1734WM MODULE PROPERTIES

General Tab Settings

Connection Tab Settings

17 HM1734-WM Strain Gage Input Module

Step #2

Open “Template” file

Copy all controller tags

Open project file

Paste controller tags

Duplicates may be created, delete them now

Step #3

Open “Template” file

Copy add-on instruction “HM1734WM”

Open project file

Paste add-on instruction in add-on’s section

18 HM1734-WM Strain Gage Input Module

Step #4

Open “Template” file

Copy HM1734WM_main routine

Open project

Paste HM1734WM_main routine

Check program tag here should be as

Example

19 HM1734-WM Strain Gage Input Module

Step #5

Check routine for entries

20 HM1734-WM Strain Gage Input Module

Data Map for HM1734-WM on Ethernet/IP

OUTPUT TAGS

[n] = slot number for module

AENT_A:[n]:O.Data

SINT[4]

Description

Output_bits_mod1.0

bit

Set Cal Mode Bit

Output_bits_mod1.1

bit

Set Run Mode Bit

Output_bits_mod1.2

bit

Ch1 Clear Tare Bit (momentary)

Output_bits_mod1.3

bit

Ch1 Tare Bit (momentary)

Output_bits_mod1.4

bit

Reserved

Output_bits_mod1.5

bit

Read AD Trim Bit (Factory Use Only)

Output_bits_mod1.6

bit

Ch2 Clear Tare Bit (momentary)

Output_bits_mod1.7

bit

Ch2 Tare Bit (momentary)

Output_bits_mod1.8

bit

Reserved

Output_bits_mod1.9

bit

Set ch1_only

Output_bits_mod1.10

bit

Set_to_4ms (Frequency)

Output_bits_mod1.11

bit

Set_to_8ms (Frequency)

Output_bits_mod1.12

bit

Set_to_16ms (Frequency)

Output_bits_mod1.13

bit

Set_to_32ms (Frequency)

Output_bits_mod1.14

bit

Set_to_40ms (Frequency)

Output_bits_mod1.15

bit

Set_to_48ms (Frequency)

Output_bits_mod1.16

bit

Vibration Filter Bit

Output_bits_mod1.17

bit

Set Motion Stabilization Filter (MSF) range from -0.002% to +0.001% of full

scale

Output_bits_mod1.18

bit

Set Motion Stabilization Filter (MSF) range from -0.004% to +0.002% of full

scale

Output_bits_mod1.19

bit

Set Motion Stabilization Filter (MSF) range from -0.008% to +0.004% of full

scale

Output_bits_mod1.20

bit

Set Motion Stabilization Filter (MSF) range from -0.010% to +0.005% of full

scale

Output_bits_mod1.21

bit

Set Zero Dead Band to 0.025% of full scale

Output_bits_mod1.22

bit

Set Zero Dead Band to 0.05% of full scale

Output_bits_mod1.23

bit

Set Zero Dead Band to 0.075% of full scale

Output_bits_mod1.24

bit

Average Sample_bit0

Output_bits_mod1.25

bit

Average Sample_bit1

Output_bits_mod1.26

bit

Average Sample_bit2

Output_bits_mod1.27

bit

Average Sample_bit3

Output_bits_mod1.28

bit

Average Sample_bit4

Output_bits_mod1.29

bit

Average Sample_bit5

Output_bits_mod1.30

bit

Average Sample_bit6

Output_bits_mod1.31

bit

Average Sample_bit7

21 HM1734-WM Strain Gage Input Module

Data Map for HM1734-WM on Ethernet/IP

Required Controller Tags

Data Tags Name

Data

Type

HM1734WM1

DINT[9]

HM1734WM1_A[0]

DINT

CH1 Set Scale Value

HM1734WM1_A[1]

DINT

CH1 Set AutoCal Reference Weigh Actual Value

HM1734WM1_A[2]

DINT

CH1 Get Weigh Value

HM1734WM1_A[3]

DINT

CH2 Set Scale Value

HM1734WM1_A[4]

DINT

CH2 Set AutoCal Reference Weigh Actual Value

HM1734WM1_A[5]

DINT

CH2 Get Weigh Value

HM1734WM1_A[6]

DINT

CH1 Set AutoCal Enable Bit

HM1734WM1_A[7]

DINT

CH2 Set AutoCal Enable Bit

HM1734WM1_A[8]

DINT

Set Average Sample Count (0-255)

HM1734WM1b

REAL[2]

HM1734WM1_B[0]

REAL

CH1 Set mV_V

HM1734WM1_B[1]

REAL

CH2 Set mV_V

HM1734WM1_B[2]

REAL

Ch1_Autocal_mV/V

HM1734WM1_B[3]

REAL

Ch2_Autocal_mV/V

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